package com.xiao.rabbitmq.rabbit;

import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

import java.io.IOException;

/**
 * @author victor
 * @desc hello 消息队列消费者
 */
@Component
@RabbitListener(queues = MQConstant.HELLO_QUEUE_NAME)
public class HelloProcessor {

    @RabbitHandler
    public void process(String content, Channel channel, Message message) throws IOException {
        System.out.println("接受消息:" + content);
        try {
            //告诉服务器收到这条消息 已经被我消费了 可以在队列删掉 这样以后就不会再发了 否则消息服务器以为这条消息没处理掉 后续还会在发
            channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
            System.out.println("receiver success");
        } catch (IOException e) {
            e.printStackTrace();
            //丢弃这条消息
            channel.basicNack(message.getMessageProperties().getDeliveryTag(), false, false);
            System.out.println("receiver fail");
        }
    }
} 
